Leukocyte Esterase
Laboratory Tests
≈ ¥20-50
(≈ $3-7)
15 min
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Description
Estimated cost for Leukocyte Esterase at general public hospitals in China is about ¥15-40, and at Grade 3A hospitals about ¥20-50, varying by hospital tier and region.
Main Uses
The primary purpose of the leukocyte esterase test is to screen for the presence of white blood cells in the urine, which can indicate an infection or inflammation in the urinary tract. It is commonly used in the initial assessment of patients with symptoms suggestive of a UTI, such as frequent urination, burning sensation during urination, or lower abdominal pain. This test is also useful for monitoring the effectiveness of treatment in patients with known UTIs.
Normal Range
The normal range for the leukocyte esterase test in urine is typically negative or trace. A positive result indicates the presence of white blood cells, which can be quantified as +1 (small), +2 (moderate), or +3 (large) amounts.
Low Values - Possible Causes
A low value, or a negative result, is generally not a concern and does not usually indicate any specific condition. However, it could potentially be seen in: 1. Absence of urinary tract infection, 2. Early stages of an infection before significant white blood cell infiltration, 3. Inadequate sample collection, 4. Recent antibiotic use that has cleared an infection, 5. Non-infectious causes of symptoms such as interstitial cystitis.
High Values - Possible Causes
High values, indicating a positive result, are commonly caused by: 1. Urinary tract infections (UTIs), including bladder, kidney, or urethra infections, 2. Pyelonephritis (kidney infection), 3. Prostatitis (inflammation of the prostate gland in men), 4. Urethritis (inflammation of the urethra), 5. Kidney stones or other obstructions leading to secondary infection.